Table 2.
Regression analysis for postoperative outcomes after inverse probability weighting.
| Open n=580 |
Minimally invasive n=416 |
Minimally invasive vs. Open | 95% confidence interval | p | ||
|---|---|---|---|---|---|---|
| 90 day mortality | 2.4% | 2.2% | OR | 0.92 | 0.38–2.22 | 0.845* |
| 90 day morbidity (any) | 38.9% | 31.9% | OR | 0.73 | 0.52–1.04 | 0.081* |
| Number of complications | 0.68 (±1.1) | 0.55 (±1.0) | Beta | −0.22 | −0.57–0.13 | 0.218- |
| Major morbidity | 15.3% | 9.3% | OR | 0.57 | 0.36–0.90 | 0.015 * |
| CCI | 31.3 (±22.7) | 31.9 (±22.2) | Beta | 0.63 | −4.73–5.99 | 0.817# |
| Postoperative ascites | 11.2% | 7.2% | OR | 0.61 | 0.28–1.34 | 0.22* |
| Post hepatectomy liver failure | 4.3% | 0.6% | OR | 0.14 | 0.03–0.60 | 0.008 * |
| Bile leak | 6.4% | 2.2% | OR | 0.33 | 0.15–0.69 | 0.003 * |
| Postoperative day 1 ascites | 8.1% | 2.7% | OR | 0.31 | 0.15–0.65 | 0.002 * |
| Postoperative day 3 ascites | 11.4% | 3.1% | OR | 0.25 | 0.12–0.51 | <0.001 * |
| Postoperative day 5 ascites | 13.7% | 7.2% | OR | 0.51 | 0.17–1.57 | 0.244* |
| Hospital stay (days) | 7.5 (±1.7) | 5.8 (±1.9) | Beta | −0.11 | −0.15–0.7 | <0.001 + |
| Readmission within 30 days | 8.4% | 8.6% | OR | 1.02 | 0.54–1.93 | 0.956* |
| R1 resection | 7.6% | 11.3% | OR | 1.55 | 0.82–2.95 | 0.179* |
| Margin width (mm) | 3.6 (±7.5) | 3.1 (±9.6) | Beta | −0.06 | −0.24–0.12 | 0.497+ |
Continuous data were expressed as mean±standard deviation or median (25th-75th percentile).
*
calculated from weighted logistic regression.
-
calculate from weighted negative binomial regression.
°
calculated from weighted poisson regression.
#
calculated from weighted linear regression.
+
calculated from weighted linear regression on log10 values.
CCI, Comprehensive complication index. GM, Geometric mean.